BEIJING (AP) — With China’s biggest freshwater lake reduced to just 25% of its usual size by a severe drought, work crews are digging trenches to keep water flowing to one of the country’s key rice-growing regions. The dramatic decline of Poyang Lake in the landlocked southeastern province of Jiangxi had otherwise cut off irrigation channels to nearby farmlands. The crews, using excavators to dig trenches, only work after dark because of the extreme daytime heat , the official Xinhua News Agency reported. A severe heat wave is wreaking havoc across much of southern China. High temperatures have sparked mountain fires that have forced the evacuation of 1,500 people in the southwest, and factories have been ordered to cut production as hydroelectric plants reduce their output amid drought conditions. The extreme heat and drought have wilted crops and shrunk rivers including the giant Yangtze, disrupting cargo traffic. Fed by […]